Both change of name by Deed Poll and Statutory Declaration can be used to change your name. Both consist of a legal document describing and relinquishing your old name and describing and adopting your new name, along with several other facts such as the date you sign the document and your address.
Both change of name by Deed Poll and Statutory Declaration are equally valid ways of changing your name.
The effective difference between Deed Poll and Statutory Declaration is how the documents are either witnessed or sworn.
To be valid a change of name by Deed Poll must be witnessed by two people who must not be related to you. The signing of the document by yourself in the presence of your two witnesses, who also sign the document to confirm their presence, is all that is required to make the change Deed Poll document and therefore your name change valid
To be valid a Statutory Declaration must be sworn and signed by you in front of a either a Solicitor, Judge, Officer of the Court or Commissioner of Oaths, who will also sign and date the document to validate it.
Deed Poll and Statutory Declaration Changing your name documents are accepted by: